What are the temperature control systems for dry-type transformers?

The safe operation and service life of dry-type transformers largely depend on the safety and reliability of the winding insulation. Exceeding the insulation withstand temperature due to winding temperature can lead to insulation damage, which is one of the main reasons why transformers cannot function properly. Therefore, monitoring and alarm control of the operating temperature of transformers are crucial.

(1) Automatic Fan Control:

Temperature signals are obtained by Pt100 thermal resistance buried in the hottest part of the low-voltage winding. As the load on the transformer increases and the operating temperature rises, the fan cooling system is automatically activated when the winding temperature reaches 110°C; when the winding temperature drops to 90°C, the system automatically stops the fan.

(2) Overtemperature Alarm and Trip:

Temperature signals from PTC nonlinear thermal resistance embedded in the low-voltage winding are collected to monitor the winding or core temperature. If the winding temperature continues to rise and reaches 155°C, the system outputs an overtemperature alarm signal. If the temperature continues to rise to 170°C, the transformer can no longer operate, and an overtemperature trip signal must be sent to the secondary protection circuit, causing the transformer to trip quickly.

(3) Temperature Display System:

Temperature changes are measured by Pt100 thermal resistance embedded in the low-voltage winding, directly displaying the temperature of each phase winding (with three-phase inspection and maximum value display, and recording of the highest historical temperature). The highest temperature can be output as a 4~20mA analog signal, which can be transmitted to a remote computer (up to 1200m away) if necessary.

連絡先

廬山,est。 1975年には中国の専門職の専門メーカーの電力変圧器及び原子炉のための50+る。 主製品 単相トランス、三相絶縁変圧器、電気トランス、物流トランス、ステップの下、信用リスク以外のリスクにつきトランス、低電圧トランス、高電圧トランス、制御トランス、トロイダルトランス、Rコアトランス直流インダクター、AC炉では、フィルタリング炉、負荷炉chokes、フィルタリングの原子炉は、中間体、高周波製品.

当社の電力変圧器及び原子炉に広く使用されて10アプリケーション:高速鉄道、建設機械、再生可能エネルギー、ロボット、医療機器、炭鉱爆発の防止、励起システム、真空焼結(炉)、中央エアコンがあります。

知電源トランス原子炉: www.lstransformer.com.

希得のカスタマイズソリューションのためのトランスや原子炉、お問い合わせください。
WhatsApp：+86 13787095096
メール:marketing@hnlsdz.com